How do you A/B test on YouTube?

A small number of creators have had testing tools provided by YouTube for years.

He also changes the thumbnails and titles of videos once published, sometimes up to dozen times in the first day.

He also has dozens of channels for different languages, so can test thumbnails and other tweaks with those.

kotaKat 2 days ago | parent | prev [-]

Youtube lets you A/B test thumbnails as a creator and see response rates, for instance.

posted 12/8/2025, 11:24:26 AM

So like a month ago. How did Beast A/B test before then?

	▲	kotaKat 2 days ago \| parent \| next [-]
		They give access to these features to their partners before general release, but this A/B feature has existed for quite some time now. I’ve seen various Patreon tech creators run those A/B tests and see them discuss them in their creator Discords.
	▲	intended 2 days ago \| parent \| prev [-]
		Hasn't this been around for ages?